Priority Level Setting; Interrupt Priority Groups - Texas Instruments CC253x User Manual

Interrupts
In the case when interrupt requests of the same priority level are received simultaneously, the polling
sequence shown in
sequence in Figure 2-4
the figure.
IP1 (0xB9) – Interrupt Priority 1
Bit Name
7:6 –
5 IP1_IPG5
4 IP1_IPG4
3
IP1_IPG3
2 IP1_IPG2
1 IP1_IPG1
0 IP1_IPG0
IP0 (0xA9) – Interrupt Priority 0
Bit Name
7:6 –
5
IP0_IPG5
4 IP0_IPG4
3 IP0_IPG3
2 IP0_IPG2
1 IP0_IPG1
0
IP0_IPG0
Group
IPG0
IPG1
IPG2
IPG3
IPG4
IPG5
48
8051 CPU
Table 2-8 is used to resolve the priority of each request. Note that the polling
is the algorithm found in
Reset R/W
00 R/W Reserved
0 R/W Interrupt group 5, priority control bit 1, see
0 R/W Interrupt group 4, priority control bit 1, see
0 R/W Interrupt group 3, priority control bit 1, see
0 R/W Interrupt group 2, priority control bit 1, see
0 R/W Interrupt group 1, priority control bit 1, see
0 R/W Interrupt group 0, priority control bit 1, see
Reset R/W
00 R/W Reserved
0 R/W Interrupt group 5, priority control bit 0, see
0 R/W Interrupt group 4, priority control bit 0, see
0 R/W Interrupt group 3, priority control bit 0, see
0 R/W Interrupt group 2, priority control bit 0, see
0 R/W Interrupt group 1, priority control bit 0, see
0 R/W Interrupt group 0, priority control bit 0, see
Table 2-6. Priority Level Setting
IP1_x
0
0
1
1
Table 2-7. Interrupt Priority Groups
RFERR
ADC
URX0
URX1
ENC
ST
Copyright © 2009–2014, Texas Instruments Incorporated
Table 2-8, not that polling is among the IP bits as listed in
Description
Table
Table
Table
Table
Table
Table
Description
Table
Table
Table
Table
Table
Table
IP0_x Priority Level
0 0 – lowest
1 1
0 2
1 3 – highest
Interrupts
RF
T1
T2
T3
T4
P0INT
SWRU191F – April 2009 – Revised April 2014
www.ti.com

2-7: Interrupt Priority Groups

2-7: Interrupt Priority Groups
2-7: Interrupt Priority Groups
2-7: Interrupt Priority Groups
2-7: Interrupt Priority Groups
2-7: Interrupt Priority Groups
2-7: Interrupt Priority Groups
2-7: Interrupt Priority Groups
2-7: Interrupt Priority Groups
2-7: Interrupt Priority Groups
2-7: Interrupt Priority Groups
2-7: Interrupt Priority Groups
DMA
P2INT
UTX0
UTX1
P1INT
WDT
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